Sterling, IL, United States of America

Donald L Haag

This inventor holds 11 USPTO granted patents. Top assignees: General Electric Company, Other. Active years: 1978-1987.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Donald L Haag. Retrieved from https://idiyas.com/inventor/donald-l-haag

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 100.0

Average Co-Inventor Count = 1.6

ph-index = 7

Forward Citations = 95(Granted Patents)


Company Filing History:


Years Active: 1978-1987

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11 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Donald L Haag

Introduction

Donald L Haag is a notable inventor based in Sterling, IL (US), recognized for his significant contributions to the field of engineering and design. With a total of 11 patents to his name, Haag has developed innovative solutions that enhance functionality and efficiency in various applications.

Latest Patents

Among his latest inventions is the Spring Disc, which is a solid spring disc made of resiliently yieldable material. This disc is shaped like a shallow cone, featuring corrugated upper and lower surfaces defined by a series of angularly spaced triangular segments of identical size and shape. The design allows for a substantially longer linear force/deflection range compared to conventional Belleville springs of similar size, resulting in a significantly lower spring rate. Another notable patent is a control device and method of operating such, which includes a plurality of terminals with contact sections arranged at different preselected elevations. This innovative control device allows for pivotal movement into electrical contact with various sections, enhancing its operational versatility.

Career Highlights

Throughout his career, Donald L Haag has worked with prominent companies, including General Electric Company. His experience in these organizations has contributed to his development as an inventor and has provided him with a platform to showcase his innovative ideas.

Collaborations

Haag has collaborated with various professionals in his field, including his coworker Lee O Woods. These collaborations have likely fostered an environment of creativity and innovation, leading to the development of his patents.

Conclusion

Donald L Haag's contributions to engineering and design through his patents reflect his innovative spirit and dedication to improving technology. His work continues to influence the industry and inspire future inventors.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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